Files
EchoHub/src/EchoHub.Client/UI/MainWindow.cs
T

942 lines
30 KiB
C#

using System.Text.RegularExpressions;
using EchoHub.Client.Themes;
using EchoHub.Core.DTOs;
using EchoHub.Core.Models;
using Terminal.Gui.App;
using Terminal.Gui.Configuration;
using Terminal.Gui.Input;
using Terminal.Gui.ViewBase;
using Terminal.Gui.Views;
using Attribute = Terminal.Gui.Drawing.Attribute;
namespace EchoHub.Client.UI;
/// <summary>
/// Main Terminal.Gui window for the EchoHub chat client.
/// </summary>
public sealed class MainWindow : Runnable
{
private readonly IApplication _app;
private readonly ListView _channelList;
private readonly ListView _messageList;
private readonly TextView _inputField;
private readonly FrameView _chatFrame;
private readonly FrameView _inputFrame;
private readonly Label _statusLabel;
private readonly Label _topicLabel;
private MenuBar _menuBar;
// Online users panel
private readonly FrameView _usersFrame;
private readonly ListView _usersList;
private readonly UserListSource _usersListSource;
private bool _usersPanelVisible = true;
private const int UsersPanelWidth = 22;
private static readonly Key F2Key = Key.F2;
internal static readonly string AppVersion =
typeof(MainWindow).Assembly.GetName().Version?.ToString(3) ?? "?";
// Cached Key constants — compare via .KeyCode to avoid Key.Equals (which also checks Handled)
private static readonly Key EnterKey = Key.Enter;
private static readonly Key NewlineKey = Key.N.WithCtrl;
private static readonly Key AltQKey = Key.Q.WithAlt;
private static readonly Key TabKey = Key.Tab;
// Available slash commands for Tab autocomplete
private static readonly string[] SlashCommands =
[
"/status", "/nick", "/color", "/theme", "/send",
"/avatar", "/profile", "/servers", "/join", "/leave",
"/topic", "/users", "/kick", "/ban", "/unban",
"/mute", "/unmute", "/role", "/nuke", "/quit", "/help"
];
private readonly List<string> _channelNames = [];
private readonly Dictionary<string, List<ChatLine>> _channelMessages = [];
private readonly Dictionary<string, int> _channelUnread = [];
private readonly Dictionary<string, string?> _channelTopics = [];
private readonly ChannelListSource _channelListSource;
private string _currentChannel = string.Empty;
private string _currentUser = string.Empty;
private int _lastChatWidth;
/// <summary>
/// Fired when the user selects a channel. Parameter is the channel name.
/// </summary>
public event Action<string>? OnChannelSelected;
/// <summary>
/// Fired when the user presses Enter in the input field. Parameters: channel name, message content.
/// </summary>
public event Action<string, string>? OnMessageSubmitted;
/// <summary>
/// Fired when the user requests to connect via the menu.
/// </summary>
public event Action? OnConnectRequested;
/// <summary>
/// Fired when the user requests to disconnect via the menu.
/// </summary>
public event Action? OnDisconnectRequested;
/// <summary>
/// Fired when the user requests to open their profile panel.
/// </summary>
public event Action? OnProfileRequested;
/// <summary>
/// Fired when the user requests to set their status.
/// </summary>
public event Action? OnStatusRequested;
/// <summary>
/// Fired when the user selects a theme from the menu. Parameter is the theme name.
/// </summary>
public event Action<string>? OnThemeSelected;
/// <summary>
/// Fired when the user requests to view saved servers.
/// </summary>
public event Action? OnSavedServersRequested;
/// <summary>
/// Fired when the user requests to create a new channel.
/// </summary>
public event Action? OnCreateChannelRequested;
/// <summary>
/// Fired when the user requests to delete the current channel.
/// </summary>
public event Action? OnDeleteChannelRequested;
public MainWindow(IApplication app)
{
_app = app;
Arrangement = ViewArrangement.Fixed;
// Menu bar at the top
_menuBar = BuildMenuBar();
Add(_menuBar);
// Left panel - channels
var channelsFrame = new FrameView
{
Title = "Channels",
X = 0,
Y = 1, // below menu bar
Width = 22,
Height = Dim.Fill(1) // leave room for status bar
};
_channelList = new ListView
{
X = 0,
Y = 0,
Width = Dim.Fill(),
Height = Dim.Fill()
};
_channelListSource = new ChannelListSource();
_channelList.Source = _channelListSource;
_channelList.ValueChanged += OnChannelListSelectionChanged;
channelsFrame.Add(_channelList);
Add(channelsFrame);
// Topic bar — sits above the chat frame in the right column
_topicLabel = new Label
{
Text = "",
X = 22,
Y = 1,
Width = Dim.Fill(UsersPanelWidth),
Height = 1,
Visible = false
};
Add(_topicLabel);
// Center panel - messages
_chatFrame = new FrameView
{
Title = "Chat",
X = 22,
Y = 1, // below menu bar (shifts to 2 when topic is visible)
Width = Dim.Fill(UsersPanelWidth),
Height = Dim.Fill(6) // leave room for input area and status bar
};
_messageList = new ListView
{
X = 0,
Y = 0,
Width = Dim.Fill(),
Height = Dim.Fill()
};
_messageList.Source = new ChatListSource();
_chatFrame.Add(_messageList);
Add(_chatFrame);
// Bottom input area
_inputFrame = new FrameView
{
Title = "Message \u2502 Enter=send \u2502 Ctrl+N=newline \u2502 Tab=complete",
X = 22,
Y = Pos.Bottom(_chatFrame),
Width = Dim.Fill(UsersPanelWidth),
Height = 5
};
_inputField = new TextView
{
X = 0,
Y = 0,
Width = Dim.Fill(),
Height = Dim.Fill(),
WordWrap = true
};
_inputField.KeyDown += OnInputKeyDown;
_inputFrame.Add(_inputField);
Add(_inputFrame);
// Right panel - online users
_usersFrame = new FrameView
{
Title = "Users",
X = Pos.AnchorEnd(UsersPanelWidth),
Y = 1,
Width = UsersPanelWidth,
Height = Dim.Fill(1)
};
_usersList = new ListView
{
X = 0,
Y = 0,
Width = Dim.Fill(),
Height = Dim.Fill()
};
_usersListSource = new UserListSource();
_usersList.Source = _usersListSource;
_usersFrame.Add(_usersList);
Add(_usersFrame);
// Status bar at the very bottom
_statusLabel = new Label
{
Text = "Disconnected",
X = 0,
Y = Pos.AnchorEnd(1),
Width = Dim.Fill(),
Height = 1
};
_statusLabel.SetScheme(SchemeManager.GetScheme("Menu"));
Add(_statusLabel);
// Apply our custom color schemes to all views
ApplyColorSchemes();
// Re-wrap messages when the chat area is resized
// Subscribe to both ListView and FrameView viewport changes for reliable resize detection
_messageList.ViewportChanged += (_, _) => OnChatViewportChanged();
_chatFrame.ViewportChanged += (_, _) => OnChatViewportChanged();
// Window-level key handling for Alt+Q (quit), F2 (toggle users panel)
KeyDown += OnWindowKeyDown;
}
/// <summary>
/// Applies the currently registered color schemes to all views.
/// Call after theme changes to refresh colors.
/// </summary>
public void ApplyColorSchemes()
{
var baseScheme = SchemeManager.GetScheme("Base");
var menuScheme = SchemeManager.GetScheme("Menu");
if (baseScheme is not null)
{
this.SetScheme(baseScheme);
// Propagate to all child views that should use the base scheme
foreach (var sub in SubViews)
{
if (sub != _menuBar && sub != _statusLabel && sub != _topicLabel)
sub.SetScheme(baseScheme);
}
}
if (menuScheme is not null)
{
_menuBar.SetScheme(menuScheme);
_statusLabel.SetScheme(menuScheme);
_topicLabel.SetScheme(menuScheme);
}
}
/// <summary>
/// Builds the menu bar with File, Server, User menus and a theme submenu.
/// </summary>
private MenuBar BuildMenuBar()
{
// Build theme menu items and prepend them with a separator header
var themeItems = new List<MenuItem>();
foreach (var t in Themes.ThemeManager.GetAvailableThemes())
{
var name = t.Name;
themeItems.Add(new MenuItem(name, "", () => OnThemeSelected?.Invoke(name), Key.Empty));
}
// Combine user items with theme items, separated by a line
var allUserItems = new List<View>
{
new MenuItem("_My Profile", "Open your profile panel", () => OnProfileRequested?.Invoke(), Key.Empty),
new MenuItem("Set _Status...", "Set your status", () => OnStatusRequested?.Invoke(), Key.Empty),
new Line()
};
allUserItems.AddRange(themeItems);
var menuBar = new MenuBar(
[
new MenuBarItem("_File",
[
new MenuItem("_Quit", "Quit EchoHub", () => _app.RequestStop(), Key.Empty)
]),
new MenuBarItem("_Server", new View[]
{
new MenuItem("_Connect...", "Connect to a server", () => OnConnectRequested?.Invoke(), Key.Empty),
new MenuItem("_Disconnect", "Disconnect from server", () => OnDisconnectRequested?.Invoke(), Key.Empty),
new Line(),
new MenuItem("New C_hannel...", "Create a new channel", () => OnCreateChannelRequested?.Invoke(), Key.Empty),
new MenuItem("_Delete Channel", "Delete the current channel", () => OnDeleteChannelRequested?.Invoke(), Key.Empty),
new Line(),
new MenuItem("_Saved Servers...", "View saved servers", () => OnSavedServersRequested?.Invoke(), Key.Empty),
new Line(),
new MenuItem("Toggle _Users Panel", "Toggle online users (F2)", () => ToggleUsersPanel(), Key.Empty)
}),
new MenuBarItem("_User", allUserItems)
]);
menuBar.X = 0;
menuBar.Y = 0;
menuBar.Width = Dim.Fill();
// Workaround: Make CommandView (title text area) mouse-transparent on each MenuBarItem.
// Without this, clicks on the text hit the CommandView sub-view whose Source propagates
// as a plain View — MenuBar.OnAccepting checks "sourceView is MenuBarItem" which fails.
// Making CommandView transparent lets clicks pass through to the MenuBarItem itself.
foreach (var mbi in menuBar.SubViews.OfType<MenuBarItem>())
{
mbi.CommandView.ViewportSettings |= ViewportSettingsFlags.TransparentMouse;
}
return menuBar;
}
/// <summary>
/// Rebuilds and replaces the menu bar (e.g., after theme list changes).
/// </summary>
public void RefreshMenuBar()
{
Remove(_menuBar);
_menuBar = BuildMenuBar();
Add(_menuBar);
ApplyColorSchemes();
SetNeedsDraw();
}
private void OnChannelListSelectionChanged(object? sender, ValueChangedEventArgs<int?> e)
{
var index = e.NewValue;
if (index.HasValue && index.Value >= 0 && index.Value < _channelNames.Count)
{
var channelName = _channelNames[index.Value];
if (channelName != _currentChannel)
{
SwitchToChannel(channelName);
OnChannelSelected?.Invoke(channelName);
}
}
}
private void OnInputKeyDown(object? sender, Key e)
{
if (e.KeyCode == TabKey.KeyCode)
{
TryAutocompleteCommand();
e.Handled = true;
}
else if (e.KeyCode == NewlineKey.KeyCode)
{
_inputField.InsertText("\n");
e.Handled = true;
}
else if (e.KeyCode == EnterKey.KeyCode)
{
var text = _inputField.Text?.Trim() ?? string.Empty;
if (!string.IsNullOrEmpty(text) && !string.IsNullOrEmpty(_currentChannel))
{
OnMessageSubmitted?.Invoke(_currentChannel, text);
_inputField.Text = string.Empty;
}
e.Handled = true;
}
else if (e.KeyCode == AltQKey.KeyCode)
{
_app.RequestStop();
e.Handled = true;
}
}
/// <summary>
/// Tab-complete slash commands in the input field.
/// </summary>
private void TryAutocompleteCommand()
{
var text = _inputField.Text ?? string.Empty;
if (!text.StartsWith('/') || text.Contains(' '))
return;
var matches = SlashCommands
.Where(c => c.StartsWith(text, StringComparison.OrdinalIgnoreCase))
.ToList();
if (matches.Count == 1)
{
_inputField.Text = matches[0] + " ";
}
else if (matches.Count > 1)
{
// Complete to longest common prefix
var prefix = matches[0];
foreach (var m in matches.Skip(1))
{
var len = 0;
while (len < prefix.Length && len < m.Length
&& char.ToLowerInvariant(prefix[len]) == char.ToLowerInvariant(m[len]))
len++;
prefix = prefix[..len];
}
if (prefix.Length > text.Length)
_inputField.Text = prefix;
}
}
private void OnChatViewportChanged()
{
var newWidth = _messageList.Viewport.Width;
if (newWidth > 0 && newWidth != _lastChatWidth)
{
_lastChatWidth = newWidth;
RefreshMessages();
}
}
private void OnWindowKeyDown(object? sender, Key e)
{
if (e.KeyCode == AltQKey.KeyCode)
{
_app.RequestStop();
e.Handled = true;
}
else if (e.KeyCode == F2Key.KeyCode)
{
ToggleUsersPanel();
e.Handled = true;
}
}
/// <summary>
/// Add a message to the specified channel's message list and refresh if it is the current channel.
/// Tracks unread count for non-active channels.
/// </summary>
public void AddMessage(MessageDto message)
{
var lines = FormatMessage(message);
if (!_channelMessages.TryGetValue(message.ChannelName, out var messages))
{
messages = [];
_channelMessages[message.ChannelName] = messages;
}
foreach (var line in lines)
{
messages.Add(line);
}
if (message.ChannelName == _currentChannel)
{
RefreshMessages();
}
else
{
// Increment unread count for non-active channels
_channelUnread.TryGetValue(message.ChannelName, out var count);
_channelUnread[message.ChannelName] = count + 1;
RefreshChannelList();
}
}
/// <summary>
/// Add a system/informational message to a channel with colored styling.
/// </summary>
public void AddSystemMessage(string channelName, string text)
{
if (!_channelMessages.TryGetValue(channelName, out var messages))
{
messages = [];
_channelMessages[channelName] = messages;
}
var time = DateTimeOffset.Now.ToString("HH:mm");
var textLines = text.Split('\n');
// First line gets timestamp prefix
messages.Add(new ChatLine(
[
new($"[{time}] ", ChatColors.TimestampAttr),
new($"** {textLines[0].TrimEnd('\r')}", ChatColors.SystemAttr)
]));
// Continuation lines are indented to align
var indent = new string(' ', $"[{time}] ** ".Length);
for (int i = 1; i < textLines.Length; i++)
{
var line = textLines[i].TrimEnd('\r');
if (string.IsNullOrWhiteSpace(line)) continue;
messages.Add(new ChatLine(
[
new($"{indent}{line}", ChatColors.SystemAttr)
]));
}
if (channelName == _currentChannel)
{
RefreshMessages();
}
}
/// <summary>
/// Add a status change message to a channel with colored styling.
/// </summary>
public void AddStatusMessage(string channelName, string username, string status)
{
var time = DateTimeOffset.Now.ToString("HH:mm");
var segments = new List<ChatSegment>
{
new($"[{time}] ", ChatColors.TimestampAttr),
new($"** {username} is now {status}", ChatColors.SystemAttr)
};
if (!_channelMessages.TryGetValue(channelName, out var messages))
{
messages = [];
_channelMessages[channelName] = messages;
}
messages.Add(new ChatLine(segments));
if (channelName == _currentChannel)
{
RefreshMessages();
}
}
/// <summary>
/// Remove all lines associated with a specific message ID.
/// </summary>
public void RemoveMessage(string channelName, Guid messageId)
{
if (_channelMessages.TryGetValue(channelName, out var messages))
{
messages.RemoveAll(l => l.MessageId == messageId);
if (channelName == _currentChannel)
RefreshMessages();
}
}
/// <summary>
/// Clear all messages from a specific channel.
/// </summary>
public void ClearChannelMessages(string channelName)
{
if (_channelMessages.TryGetValue(channelName, out var messages))
{
messages.Clear();
if (channelName == _currentChannel)
RefreshMessages();
}
}
/// <summary>
/// Set the list of available channels, storing topics, and refresh the channel list view.
/// </summary>
public void SetChannels(List<ChannelDto> channels)
{
_channelNames.Clear();
_channelTopics.Clear();
foreach (var ch in channels)
{
_channelNames.Add(ch.Name);
_channelTopics[ch.Name] = ch.Topic;
if (!_channelMessages.ContainsKey(ch.Name))
_channelMessages[ch.Name] = [];
}
RefreshChannelList();
}
/// <summary>
/// Ensure a channel exists in the left panel list (used for private channels joined via /join).
/// </summary>
public void EnsureChannelInList(string channelName)
{
if (_channelNames.Contains(channelName))
return;
_channelNames.Add(channelName);
if (!_channelMessages.ContainsKey(channelName))
_channelMessages[channelName] = [];
RefreshChannelList();
}
/// <summary>
/// Remove a channel from the left panel list.
/// </summary>
public void RemoveChannel(string channelName)
{
_channelNames.Remove(channelName);
_channelTopics.Remove(channelName);
RefreshChannelList();
}
/// <summary>
/// Update the topic for a specific channel.
/// </summary>
public void SetChannelTopic(string channelName, string? topic)
{
_channelTopics[channelName] = topic;
if (channelName == _currentChannel)
UpdateTopicBar();
}
/// <summary>
/// Show an error message to the user.
/// </summary>
public void ShowError(string message)
{
MessageBox.ErrorQuery(_app, "Error", message, "OK");
}
/// <summary>
/// Update the connection status displayed in the status bar.
/// </summary>
public void UpdateStatusBar(string status)
{
var userPart = string.IsNullOrEmpty(_currentUser) ? "" : $" \u2502 User: {_currentUser}";
var channelPart = string.IsNullOrEmpty(_currentChannel) ? "" : $" \u2502 #{_currentChannel}";
_statusLabel.Text = $" v{AppVersion} \u2502 {status}{userPart}{channelPart}";
}
/// <summary>
/// Set the current user name for display in the status bar.
/// </summary>
public void SetCurrentUser(string username)
{
_currentUser = username;
}
/// <summary>
/// Get the current channel name.
/// </summary>
public string CurrentChannel => _currentChannel;
/// <summary>
/// Get all channel names that have message buffers (for broadcasting status changes).
/// </summary>
public IReadOnlyList<string> GetChannelNames() => _channelNames.AsReadOnly();
/// <summary>
/// Switch the chat view to the given channel, resetting its unread count and updating the topic bar.
/// </summary>
public void SwitchToChannel(string channelName)
{
_currentChannel = channelName;
_chatFrame.Title = $"#{channelName}";
// Reset unread count for this channel
_channelUnread[channelName] = 0;
RefreshChannelList();
RefreshMessages();
UpdateTopicBar();
// Update channel list selection
var idx = _channelNames.IndexOf(channelName);
if (idx >= 0)
_channelList.SelectedItem = idx;
}
/// <summary>
/// Load historical messages into a channel, replacing any existing messages.
/// </summary>
public void LoadHistory(string channelName, List<MessageDto> messages)
{
var formatted = messages.SelectMany(FormatMessage).ToList();
_channelMessages[channelName] = formatted;
if (channelName == _currentChannel)
{
RefreshMessages();
}
}
/// <summary>
/// Clear all messages and channels (used on disconnect).
/// </summary>
public void ClearAll()
{
_channelNames.Clear();
_channelMessages.Clear();
_channelUnread.Clear();
_channelTopics.Clear();
_currentChannel = string.Empty;
_currentUser = string.Empty;
_channelListSource.Update([], [], string.Empty);
_channelList.Source = _channelListSource;
_chatFrame.Title = "Chat";
_topicLabel.Visible = false;
_chatFrame.Y = 1;
_usersListSource.Update([]);
_usersList.Source = _usersListSource;
_usersFrame.Title = "Users";
RefreshMessages();
}
/// <summary>
/// Focus the input field for typing.
/// </summary>
public void FocusInput()
{
_inputField.SetFocus();
}
private void RefreshMessages()
{
if (_channelMessages.TryGetValue(_currentChannel, out var messages))
{
var width = _messageList.Viewport.Width;
// Update cached width when viewport reports a valid value;
// fall back to last known width if viewport hasn't been laid out yet.
if (width > 0)
_lastChatWidth = width;
else
width = _lastChatWidth;
var source = new ChatListSource();
if (width > 0)
{
foreach (var line in messages)
source.AddRange(line.Wrap(width));
}
else
{
source.AddRange(messages);
}
_messageList.Source = source;
if (source.Count > 0)
_messageList.SelectedItem = source.Count - 1;
}
else
{
_messageList.Source = new ChatListSource();
}
}
/// <summary>
/// Refresh the channel list view, showing unread counts next to channel names.
/// </summary>
private void RefreshChannelList()
{
_channelListSource.Update(_channelNames, _channelUnread, _currentChannel);
_channelList.Source = _channelListSource;
// Restore selection to current channel
var idx = _channelNames.IndexOf(_currentChannel);
if (idx >= 0)
_channelList.SelectedItem = idx;
}
/// <summary>
/// Show or hide the topic bar based on the current channel's topic.
/// </summary>
private void UpdateTopicBar()
{
_channelTopics.TryGetValue(_currentChannel, out var topic);
if (!string.IsNullOrWhiteSpace(topic))
{
_topicLabel.Text = $" Topic: {topic}";
_topicLabel.Visible = true;
_chatFrame.Y = 2;
}
else
{
_topicLabel.Visible = false;
_chatFrame.Y = 1;
}
}
/// <summary>
/// Adjusts widths of chat, topic, and input frames based on users panel visibility.
/// </summary>
private void UpdateLayout()
{
var rightMargin = _usersPanelVisible ? UsersPanelWidth : 0;
_chatFrame.Width = Dim.Fill(rightMargin);
_topicLabel.Width = Dim.Fill(rightMargin);
_inputFrame.Width = Dim.Fill(rightMargin);
_usersFrame.Visible = _usersPanelVisible;
SetNeedsDraw();
}
/// <summary>
/// Toggle the online users panel visibility (F2).
/// </summary>
public void ToggleUsersPanel()
{
_usersPanelVisible = !_usersPanelVisible;
UpdateLayout();
}
/// <summary>
/// Update the online users list display.
/// </summary>
public void UpdateOnlineUsers(List<UserPresenceDto> users)
{
var displayItems = users.Select(u =>
{
var statusIcon = u.Status switch
{
UserStatus.Online => "\u25cf", // ●
UserStatus.Away => "\u25cb", // ○
UserStatus.DoNotDisturb => "\u25d0", // ◐
UserStatus.Invisible => "\u25cc", // ◌
_ => " "
};
var name = u.DisplayName ?? u.Username;
var roleTag = u.Role switch
{
ServerRole.Owner => "\u2605", // ★
ServerRole.Admin => "\u2666", // ♦
ServerRole.Mod => "\u2740", // ❀
_ => ""
};
var text = $"{statusIcon} {roleTag}{name}";
var nameColor = ColorHelper.ParseHexColor(u.NicknameColor);
return (text, nameColor);
}).ToList();
_usersListSource.Update(displayItems);
_usersList.Source = _usersListSource;
_usersFrame.Title = $"Users ({users.Count})";
}
/// <summary>
/// Format a message DTO into one or more display lines based on its MessageType.
/// Timestamps are dimmed and sender names are colored.
/// </summary>
private List<ChatLine> FormatMessage(MessageDto message)
{
var time = message.SentAt.ToLocalTime().ToString("HH:mm");
var senderName = message.SenderUsername + ":";
var senderColor = ColorHelper.ParseHexColor(message.SenderNicknameColor);
var lines = new List<ChatLine>();
switch (message.Type)
{
case MessageType.Image:
lines.Add(BuildChatLine(time, senderName, senderColor, " [Image]"));
// Content IS the ASCII art — add each line as a separate list item
if (!string.IsNullOrWhiteSpace(message.Content))
{
foreach (var artLine in message.Content.Split('\n'))
{
// Parse color tags from colored ASCII art
var trimmed = artLine.TrimEnd('\r');
if (ChatLine.HasColorTags(trimmed))
lines.Add(ChatLine.FromColoredText(" " + trimmed));
else
lines.Add(new ChatLine($" {trimmed}"));
}
}
break;
case MessageType.File:
var fileName = message.AttachmentFileName ?? "unknown";
var fileContent = !string.IsNullOrWhiteSpace(message.Content) ? $" {message.Content}" : "";
lines.Add(BuildChatLine(time, senderName, senderColor, $" [File: {fileName}]{fileContent}"));
break;
case MessageType.Text:
default:
var contentLines = message.Content.Split('\n');
var firstLine = contentLines[0].TrimEnd('\r');
lines.Add(BuildChatLineWithMentions(time, senderName, senderColor, $" {firstLine}"));
// Continuation lines indented to align with first line's content
var indent = new string(' ', $"[{time}] {senderName} ".Length);
for (int i = 1; i < contentLines.Length; i++)
{
var contText = $"{indent}{contentLines[i].TrimEnd('\r')}";
lines.Add(new ChatLine(ChatColors.SplitMentions(contText)));
}
break;
}
// Tag all lines with the message ID for deletion support
foreach (var line in lines)
line.MessageId = message.Id;
// Check for @mention of current user
if (!string.IsNullOrEmpty(_currentUser) && message.Type == MessageType.Text)
{
var pattern = $@"@{Regex.Escape(_currentUser)}\b";
if (Regex.IsMatch(message.Content, pattern, RegexOptions.IgnoreCase))
{
foreach (var line in lines)
line.IsMention = true;
}
}
return lines;
}
/// <summary>
/// Build a chat line with a dimmed timestamp and optionally colored sender name.
/// </summary>
private static ChatLine BuildChatLine(string time, string senderName, Attribute? senderColor, string suffix)
{
var segments = new List<ChatSegment>
{
new($"[{time}] ", ChatColors.TimestampAttr),
new(senderName, senderColor),
new(suffix, null)
};
return new ChatLine(segments);
}
/// <summary>
/// Build a chat line with @mention highlighting in the suffix text.
/// </summary>
private static ChatLine BuildChatLineWithMentions(string time, string senderName, Attribute? senderColor, string suffix)
{
var segments = new List<ChatSegment>
{
new($"[{time}] ", ChatColors.TimestampAttr),
new(senderName, senderColor),
};
segments.AddRange(ChatColors.SplitMentions(suffix));
return new ChatLine(segments);
}
}